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Zoom › Voltage of charged TP2100
10-22-2004 05:25 PM  13 years agoPost 1
turboomni

rrProfessor

East of the Equator

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I have heard a fully charged 3 cell LYPO should be between 12.40 to 12.6 volts. On all my packs I only get a best of 12.20 volts. Is there a problem with my charger or is this ok?
Thanks

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10-22-2004 07:08 PM  13 years agoPost 2
ammo

rrVeteran

Singapore

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Check with a reliable multimeter or with astroflight wattmeter if u have it. some chargers can be pretty inaccurate on the voltage that they display.

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10-22-2004 07:18 PM  13 years agoPost 3
turboomni

rrProfessor

East of the Equator

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I did check with a digital voltmeter. All I get is 12.2 V

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10-22-2004 07:26 PM  13 years agoPost 4
ammo

rrVeteran

Singapore

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I'm not too familiar with all lipo trends but it seems to me you might have unbalanced cells or even a dying one.

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10-22-2004 07:32 PM  13 years agoPost 5
ericfly

rrApprentice

Cornwall, UK

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Measure the voltage of each cell.

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10-22-2004 08:24 PM  13 years agoPost 6
iskoos

rrKey Veteran

Orlando, FL

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you can't measure each cell on TP packs without tearing the pack apart. At least I don't know anyway of doing so.

12.20 is too low. Something is definitley wrong. You shouldn't be reading any less than 12.50-12.55v right after charge.
My TP 1320 reads 12.55v after charge and it holds it till I use it.

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10-22-2004 09:02 PM  13 years agoPost 7
CRAZYKEV

rrVeteran

Cincinnati,Oh -​U.S.A.

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Turbomni,

I have seen guys with this problem before when they are using a 120v to 12v converter to run the battery charger that isn't up to the task. How many amp converter are you using. Should be at least 5 amp to work with most chargers and more if you have a charger that will charge more than one pack at a time.

Kevin

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10-23-2004 02:47 AM  13 years agoPost 8
turboomni

rrProfessor

East of the Equator

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My power supply is rated at 17 amps but this also was the case using batteries. My charger is a Hobbico Fast field charger that does nicads NMH's and Lipolies. It is Not an expensive charger. I called Hobbico today and asked them. They said that was about right as far as the voltage goes. I guess to really charge them up good a Triton or other high quality charger would be the way to go.

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10-23-2004 03:32 AM  13 years agoPost 9
motorbikemike

rrApprentice

aurora CO

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Get a good charger for shure! You have spent alot of money on those
LI-PO's so you want to take care of them. I like the ORBIT the best but I hear the triton is ok to. The charger makes all the differance in the world!!
Mike

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10-23-2004 04:06 AM  13 years agoPost 10
turboomni

rrProfessor

East of the Equator

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who carries Orbit? What other chargers do you recommend?
Are there any out there that charge 2 or more packs at once?

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10-23-2004 04:17 AM  13 years agoPost 11
iskoos

rrKey Veteran

Orlando, FL

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I called Hobbico today and asked them. They said that was about right as far as the voltage goes.
Did they tell you that 12.20volts is a good voltage for fully charged Lipo packs?

I wouldn't buy that. But I also understand them because saying it is not good is no different than acknowleding that the charger has some problems.

My suggestion is that check your charge cable and connectors. Make sure soldering at contact points are good. I have had the same problem once. I used my friend's home made chagre cable and soldering was not done properly resulting in different ohm readings for negative and pozitive leads. This is enough to mess up your charge. So if your charge cable and the battery is ok, then go ahead and start a thread in the main discussion section (because you will have better participition there) and ask if anyone using Hobbico charger having the same problem. If yes then get yourself a new charger if NO. then call Hobbico again but this time give them a little business and ask what they have to do for you.
I didn't hear anything wrong about that charger and it should peak 3-cell lipo pack to 12.60volts easily.

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10-23-2004 04:20 AM  13 years agoPost 12
helicopter

rrApprentice

Omaha, Nebraska

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Wrong for lipo

Guys,
I asked the same Q last year with mine.
Hobbyco only charges to about 90% of capacity!

Get an Astroflight or Apache!

Love

I love gravity, it always keeps my feet planted when I fly!

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10-23-2004 04:25 AM  13 years agoPost 13
turboomni

rrProfessor

East of the Equator

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where the hell do I get a astroflight or apache?

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10-23-2004 06:24 AM  13 years agoPost 14
Jarod

rrVeteran

USA

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I love my triton. I have been using it for almost 1 year. It works excellent in my opinion. I have about 8 lipos of all sizes and voltages. Im very picky about things and the triton does everything I need.

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10-23-2004 06:29 AM  13 years agoPost 15
motorbikemike

rrApprentice

aurora CO

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Go to fxaeromodels.com they will have what you need.
Mike

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